[Minios-devel] [UNIKRAFT PATCHv4 2/3] build: Split ofw from kvm plat to independent library

[Jia He <justin.he@xxxxxxx>]

This patch splits the device tree driver as a separate library from the kvm
platform library. This is similar to what we do for virtio or pci drivers

The discussion is at [1].
[1] 
https://lists.xenproject.org/archives/html/minios-devel/2019-07/msg00046.html

Signed-off-by: Jia He <justin.he@xxxxxxx>
Suggested-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
Reviewed-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
---
 plat/kvm/Config.uk   |  6 ++++++
 plat/kvm/Makefile.uk | 11 ++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/plat/kvm/Config.uk b/plat/kvm/Config.uk
index 7865ac6..28fb7b8 100644
--- a/plat/kvm/Config.uk
+++ b/plat/kvm/Config.uk
@@ -84,6 +84,12 @@ endmenu
 config LIBGICV2
        bool "Arm GIC (generic interrupt controller) v2 library support"
        default y if ARCH_ARM_64
+       select LIBOFW
        depends on ARCH_ARM_64
 
+config LIBOFW
+       bool "Open Firmware library support"
+       default n
+       select LIBFDT
+
 endif
diff --git a/plat/kvm/Makefile.uk b/plat/kvm/Makefile.uk
index 5563283..5208357 100644
--- a/plat/kvm/Makefile.uk
+++ b/plat/kvm/Makefile.uk
@@ -10,6 +10,7 @@ $(eval $(call addplatlib,kvm,libkvmplat))
 $(eval $(call addplatlib_s,kvm,libkvmpci,$(CONFIG_KVM_PCI)))
 $(eval $(call addplatlib_s,kvm,libkvmvirtio,$(CONFIG_VIRTIO_BUS)))
 $(eval $(call addplatlib_s,kvm,libkvmvirtionet,$(CONFIG_VIRTIO_NET)))
+$(eval $(call addplatlib_s,kvm,libkvmofw,$(CONFIG_LIBOFW)))
 $(eval $(call addplatlib_s,kvm,libkvmgicv2,$(CONFIG_LIBGICV2)))
 
 ##
@@ -67,7 +68,6 @@ LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += 
$(UK_PLAT_COMMON_BASE)/arm/cache64.S|co
 LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += 
$(UK_PLAT_COMMON_BASE)/arm/psci_arm64.S|common
 LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += 
$(UK_PLAT_COMMON_BASE)/arm/time.c|common
 LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += 
$(UK_PLAT_COMMON_BASE)/arm/traps.c|common
-LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += 
$(UK_PLAT_DRIVERS_BASE)/ofw/fdt.c|common
 LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBKVMPLAT_BASE)/arm/entry64.S
 LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBKVMPLAT_BASE)/arm/exceptions.S
 LIBKVMPLAT_SRCS-$(CONFIG_ARCH_ARM_64) += $(LIBKVMPLAT_BASE)/arm/pagetable64.S
@@ -119,6 +119,15 @@ LIBKVMVIRTIONET_CINCLUDES-y    += 
-I$(UK_PLAT_DRIVERS_BASE)/include
 LIBKVMVIRTIONET_SRCS-y +=\
                        $(UK_PLAT_DRIVERS_BASE)/virtio/virtio_net.c
 
+##
+## OFW library definitions
+##
+LIBKVMOFW_CINCLUDES-y         += -I$(LIBKVMPLAT_BASE)/include
+LIBKVMOFW_CINCLUDES-y         += -I$(UK_PLAT_COMMON_BASE)/include
+LIBKVMOFW_CINCLUDES-y         += -I$(UK_PLAT_DRIVERS_BASE)/include
+
+LIBKVMOFW_SRCS-y                  += $(UK_PLAT_DRIVERS_BASE)/ofw/fdt.c
+
 ##
 ## GICv2 library definitions
 ##
-- 
2.17.1


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